Last night, I landed after dark and noticed that the landing light had stopped working. I assume it is the bulb as they are known for a short life. What would be the standard landing light bulb on a 78 model year PA28-161 ? Is there some replacement with a slightly longer life expectancy ? Is there a legit LED replacement (I have my doubts about the 'standard electrical part' interpretation when it comes to drop-in LED or HID replacments) ?